A Simple Servlet That 

Generates Plain Text

import java.io.*; 

import javax.servlet.*;

import javax.servlet.http.*;

public class HelloWorld extends HttpServlet {

public void doGet(HttpServletRequest request,

HttpServletResponse response)

throws ServletException, IOException {

PrintWriter out = response.getWriter();

out.println("Hello World");

}

}

11

Servlets

www.corewebprogramming.com

Generating HTML

Set the Content Type header

Use response.setContentType

Output HTML 

Be sure to include the DOCTYPE

Use an HTML validation service

http://validator.w3.org/

http://www.htmlhelp.com/tools/validator/

12

Servlets

www.corewebprogramming.com

6